Propeamussium siratama (Oyama, 1951)

Dijkstra, Henk H. & Maestrati, Philippe, 2008, New species and new records of deep-water Pectinoidea (Bivalvia: Propeamussiidae, Entoliidae and Pectinidae) from the South Pacific, Mémoires du Muséum national d'Histoire naturelle 196, pp. 77-114 : 85

Propeamussium siratama (Oyama, 1951)

Ctenamusium (Micramussium) siratama Oyama, 1951: 80 , pl. 13, figs 5-7.

MATERIAL EXAMINED. — The type material (see Dijkstra & 159°59’E, 364-402 m, 1 lv; stn CP 1749, 09°21’S, 159°56’E, Kastoro 1997: 253). 582-594 m, 13 spms; stn CP 1783, 08°33’S, 160°42’E, Fiji. MUSORSTOM 10: stn DW 1308, 17˚33’S, 178˚53’E, 893- 399-700 m, 3 spms; stn CP 1786, 09°21’S, 160°25’E, 387 897 m, 2 lv, 3 rv; stn CP 1309, 17˚32’S, 178˚53’E, 843-887 m, m, 1 spm; stn CP 1792, 09°15’S, 160°09’E, 477-505 m, 1 1 lv; stn CP 1353, 17˚31’S, 178˚53’E, 879-897 m, 7 spms, 7 lv, lv; stn CP 1795, 09°19’S, 160°23’E, 442-451 m, 1 rv; stn 8 rv; stn CP 1354, 17˚43’S, 178˚55’E, 959-963 m, 3 lv, 4 rv; stn CP 1801, 09°25’S, 160°26’E, 264-273 m, 1 spm; stn CP DW 1383, 18˚18’S, 178˚03’E, 230-251 m, 1 lv . — BORDAU 1: 1804, 09°32’S, 160°37’E, 309-328 m, 2 lv, 1 rv; stn CP stn CP 1400, 16˚28’S, 179˚50’W, 1004-1012 m, 2 spms. 1805, 09°35’S, 160°43’E, 367-500 m, 1 spm; stn CP 1808, Solomon Islands. SALOMON 1: stn CP 1747, 09°22’S, 09°46’S, 160°53’E, 611-636 m, 1 spm .

DISTRIBUTION. — Japan, Philippines, Indonesia (Dijkstra & Kastoro 1997: 253) and New Caledonia ( Dijkstra 2001: 82); live in 283-533 m. New records for the Solomon Islands and Fiji. Present material live in 273-1004 m. The specimens are from remarkably deeper water than previous records .

REMARKS. — The present material matches the original description closely and is very similar to studied material from Japan ( Dijkstra 2001: 82), but differs in having a few more internal ribs (10 rather then the typical 8).